Author:
Billotte Thomas,Osório Jonas,Amrani Foued,Gérôme Frédéric,Debord Benoît,Benabid Fetah
Abstract
We report on saturated-absorption-spectroscopy in acetylene-filled hollow-core fiber using azimuthally-structured fiber modes. The results show rotational-frequency-shift of 11 MHz and 2-fold contrast enhancement of the saturated signal when using with LP11 mode over LP01 mode.